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Image detection method of vehicle sideslip motion

An image detection, vehicle side technology, applied in the field of image detection of vehicle sideslip motion, can solve problems such as the inability to meet the real-time detection requirements of vehicle sideslip amount, the limitation of vehicle speed and distance, and the inability to detect sideslip amount, etc. Achieve the effect of solving real-time sideslip detection

Active Publication Date: 2011-12-21
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] Since the detection of vehicle side slip is carried out on the side slip test platform, the vehicle's driving speed and driving distance are limited during the test, and the side slip when the vehicle is actually driving and turning cannot be detected, which cannot meet the real-time detection requirements of vehicle side slip

Method used

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  • Image detection method of vehicle sideslip motion
  • Image detection method of vehicle sideslip motion

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Embodiment Construction

[0023] refer to figure 1 .

[0024] [Step 1] Install four CCD image sensors and build an image database. First, the four-way CCD image sensors are respectively installed and fixed under the vehicle body directly in front of the front wheels, and on the side of the vehicle body above the rear wheels. Wherein, the image collected by the front wheel CCD image sensor is used to detect the front wheel angle value of the vehicle, and the image collected by the rear wheel CCD image sensor is used to detect the side slip of the vehicle. The resolution of the collected images is 320×240.

[0025] When the front wheel CCD image sensor is installed for the first time, or the position of the front wheel CCD image sensor is moved, it is necessary to establish or update the image database before the side slip detection. Turn 1° once to read the RGB image of the front wheel rotation angle collected by the two-way CCD image sensor of the front wheel, and mark the rotation angle number for ...

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Abstract

The invention discloses an image detection method for the side-slipping motion of a vehicle, which is used for solving the technical problem of poor instantaneity in the existing detection method for the side-slipping motion of the vehicle. By adopting the technical scheme, the image detection method comprises the following steps of: obtaining an RGB (Red-Green-Blue) images containing side-slipping grinding crack and wheel angle information of a road vehicle by four-path CCD (Charged Coupled Device) image sensors fixed on a vehicle body, and carrying out denoising processing on the RGB images; cutting the two-path denoised front-wheel angle images according to the cutting mode of an image database; adopting a Canny operator to extract edges for the cut images; matching the edge images with edge images in the image database; matching marks for the nearest database images, i.e. the front-wheel angle value at the moment; adopting a wavelet algorithm to enhance the filtered road images ofrear-wheel side-slipping grinding cracks; adopting the Canny operator to extract the edges of the enhanced images; carrying out expansive operation on the edges; and calculating the number of pixel points in the horizontal direction to obtain side-slipping amount. By the image detection method, the difficulty of detecting real-time side-slipping amount in driving and turning of the vehicle is solved.

Description

technical field [0001] The invention relates to an image detection method, in particular to an image detection method for vehicle sideslip motion. Background technique [0002] The document "Hu Sufeng, Side-slip test bench for on-site motor vehicle inspection [J], Construction Machinery and Maintenance, 2010 (10): 166-167" discloses a side-slip test bench for on-site motor vehicle inspection, which is used for vehicle Detection of sideslip motion. The main device of the sideslip test bench is the side slide plate, which is mainly composed of linear displacement sensors, return springs, nylon rollers and tension springs. The basic detection principle is that if the steering wheel camber and toe angle of the vehicle do not match properly, when the vehicle passes the side skateboard (500mm) at a constant speed (5km / h), the tire camber force will cause the skateboard to move left or The amount of side slip to the right makes the upper slide plate move, and the lock pin welded ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 史忠科杨隽楠舒甜周全宇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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